The Passages EcoUrns are made from durable and environmentally friendly cornstarch. They featured a secure "snap lock" closing mechanism that permanently closes the urn. The EcoUrns can be kept at home, or placed in a cemetery miche or columbarium since they will not biodegrade or deteriorate until buried. When buried in the earth, the urn will biodegrade completely over time. (The time taken to biodegrade will vary depending on local soil conditions).